Sound-operating mechanism.



C. L. METZGEILJ. A. FORSTER 6; W. E. KUNE. SOUND OPERATING MECHANISM.

APPLICATION FILED JUNE 18, 1912.

1,106,664. Patented Aug. 11, 1914.

W/T/VE88E8: mmvroas 0/ Char/es LMe/kyenkmA/Zwfer 0 mdlW/mv (ff/rune L7 .412: 93%.

rut kamus rsrtlu cm. wAsumumu, n. c.

UNITED STATES PATENT @FFKQE.

CHARLES I1. METZGER, JOSEPH A. FGRSTER, AND WILLIAM E..KUNE, OF ALAMEDA,

' CALIFORNIA.

SOUND-OPERATING MECHANISM.

ioenea.

To all whom it may concern:

Be it known that we, CHARLES L. Mnrzonn, J osnrrr A. Fonsrnr, and WILLIAM E. Kenn, citizens of the United States, residing at Alameda, in the county of Alameda and State of California, have invented certain new and useful Improvements in Sound- Operating Mechanisms, of which the following is a specification.

This invention relates to stage noise cabinets and consists in an apparatus having assembled therein a device which is adapted to imitate the exhaust of an engine.

The principal object of the invention is to improve and simplify the general construction of devices of this character.

Vith tie above and other objectsin view, as will be hereinafter apparent, this invention consists in general of certain novel con structions, combinations, and arrangements of parts as will be hereinafter fully described, illustrated in the accompanying drawings and specifically claimed.

In the accompanying drawings, characters of reference indicate like parts in the severalviews, and Figure l is an enlarged side elevation partly in section showing the construction of the apparatus used to produce a sound imitating the exhaust of an engine. F 2 is an end elevation of the apparatus shown in Fig. l the view being partly in section.

In this device the standard 58 serves to support a jack shaft which serves to sup port a belt pulley 60. This belt pulley 60 is adapted to be connected by means of a belt with suitable drive means. A collar 63 is insulated from the shaft and surrounding members by in ulation 6%. 0n the standard 58 there is a block of insulating material 65 'whereon is mounted a spring finger 66 having a post 6? which is connected to the battery or other source of electrical power, the latter not being deemed necessary here to be shown.

On the shaft 55 is fixed a sleeve 68 wherefrom extend arms 69 to which are connected the magnet spools 70. On the collar 3 is a binding post 71 and one end of the magnet winding is connected to this binding post by a wire 72, the remaining end being ground on the sleeve 68. Slidably and rotatably mounted on the shaft 55 is a sleeve 74 carry ing at the end adjacent the magnets a disk 75 forming an armature for the magnet.

Specification of Letters Patent.

Application filed June 18, 1912.

like

Patented Au ill, 1914i. Serial No. 704,379.

Between the disk 75 and the magnets is a leaf spring 76 which normally holds the disks away from said magnets. Fixed upon the sleeve 74 is a hub 77 carrying a plurality of arms 78 which vary in number in accordance with the speed of exhaust that it is desired to imitate. On each of the arms 78 is a strip of sand paper 79 and this strip of sand paper, when the device is in operation, contacts successively with a series of pin-like teeth 80 supported in a block 81 carried by a bracket 82. In the operation of this form of the device upon the magnets being energized the disk will be attracted against the cores thereof and will be caused to rotate as the magnets rotate, these magnets being rotated by the arms 69 formed upon the sleeve 68 fixed upon the shaft 55. Then as the sand paper passes over the points of the pins a sound is produced which imitates the exhaust of an engine.

It is obvious that many minor changes may be made in the form and construction of this invention without departing from the material principles thereof, and it is therefore not wished to confine the invention to the exact form herein shown and described, but it is wished to include all such as properly come within the scope claimed.

Having thus described the invention, what is claimed as new, is

1. In an apparatus of the class described, a device for imitating the exhaust of a locomotive comprising a shaft, means to drive said shaft, a hub slidably and rotatably mounted on said shaft, friction producing means carried by said hub, coacting means adjacent the path of said friction producing nieans and adapted to engage the friction producing means when the hub is slid along the shaft and rotated, and means to simultancously move said hub along said shaft and cause the hub to rotate with the shaft.

2. In an apparatus of the class described, a device for imitating the exhaust of alocomotive comprising a shaft, means for driving said shaft, a hub slidably and rotatably mounted on said shaft, lateral arms carried by said hub, said arms provided with rough outer portions constituting friction producing portions, and means adjacent the path of said friction producing portions and adapted to engage the friction producing portions when the hub is slid along the I the hub is slid along the shaft androtated,

and means to simultaneously move said hub along said shaft and cause the hub to rotate with the shaft.

4. In an apparatus of the class described, a device for imitating the exhaust of a locomotive comprising a shaft, means for drivmg said shaft, a hub slidably and rotatably mounted upon said shaft, a plurality of laterally extending arms formed upon said hub, sand paper carried by the outer portions of said arms, a plurality of pin-like teeth positioned adjacent said arms and adapted to engage the sand paper carried by said arms When the hub is slid along the shaft and rotated, and means to simultaneously move said hub along said shaft and cause the hub to rot-ate 'With the shaft. 5. In an apparatus of the class described,

a device for imitating the exhaust of a 1000- motive comprising a shaft, means for driving said shaft, a hub slidably and rotatably mounted on said shaft, friction producing means carried by said hub, co-acting means adjacent the path of said friction producing means and adapted to engage the friction producing means When the hub is slid along the shaft and rotated, means carried by said shaft for normally holding said I friction producing means from engagement With said co-acting means thereby preventing the device from accidentally producing a noise, 7 and means to simultaneously move said hub along said shaft and cause the hub to rotate with said shaft.

In testimony whereof We affix our signatures in presence of tWo Witnesses.

CHARLES L. METZGER. JOSEPH A. FORSTER. WILLIAM E. KUNE.

VVitnesses':

W. A. STOCK, F. P. SCHROEDER.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

. Washington, .D. C. 

